Airbag control unit with part number 89170-35330

What does the airbag control unit 89170-35330 do?

The 89170-35330 is the airbag control unit of Toyota in the restraint system (SRS). It measures through the crash sensors whether an impact occurs and, in an emergency, triggers the appropriate airbags and seatbelt pretensioners. It makes this decision within fractions of a second.

The unit keeps the entire system in view and checks the connections continuously. If it detects a fault, it reports it via the airbag warning light in the dashboard area of the vehicle.

After an accident, it stores crash data and then locks itself. This data remains in the unit even if the vehicle continues to drive afterwards.

Why does the control unit 89170-35330 fail?

With the 89170-35330, the most common cause is the storage of crash data after an accident, even if no airbag has triggered. Further triggers are ageing electronics, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

Crash data comes first because an ordinary diagnostic tool cannot remove it. It stays in the memory and can appear as a fault pattern, even though little may be visible on the car from the outside.

Electronic components age over the years, and solder joints on the circuit board can go cold. Moisture and corrosion impair the plug connections, and the consequences may only show after some time.

Voltage spikes also belong here, for example when the battery is weakening or when a vehicle is started with jump leads.

How can you tell that the 89170-35330 is defective?

A fault in the 89170-35330 shows first on the airbag warning light in the instrument cluster, which stays on permanently or intermittently. An error message in the instrument cluster, no connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared confirm the suspicion.

In an emergency, airbags and seatbelt pretensioners may then possibly not trigger. The warning light is therefore not a minor matter but a clear indication of the restraint system.

Anyone who observes the warning light recognises the fault without a specialist first having to search. The light therefore reports it actively.

Which vehicles is the 89170-35330 fitted in?

The 89170-35330 is fitted in these vehicles: Toyota FJ Cruiser GSJ15 (2006-2022).

The vehicles assigned to this part number are listed.

• Toyota FJ Cruiser GSJ15 (2006-2022)

Comparing the part number on the label of the removed unit with this page merely confirms that you have the correct unit in front of you. Have the fault memory read out beforehand, because this result shows whether the control unit is faulty or whether a plug or a cable is behind the problem.

For the same vehicles, we also repair control units with the part numbers 89170-35300, 89170-35320, 89170-35380, 89170-35470.

How does the repair of the 89170-35330 work?

First you have the fault memory read out and enclose the log, then you disconnect the battery and only then remove the 89170-35330. Processing at Airbag24 normally takes 3–4 working days.

Next, you create a repair order online and pack the unit well before you send it in. At Airbag24, it is examined on the test bench, defective components are dealt with during the repair, stored crash data is erased, and a function test follows.

After that, your own unit is returned to you. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 89170-35330 get to Airbag24?

You send the 89170-35330 to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, the unit comes back by UPS.

Put the printed repair order into the parcel; pack the unit shock-resistant.